The Ford GT350 has been getting great reviews. The Ferrari 458 Italia is a legend with it’s flat plane V8.
A “flat-plane” has the throws on the crankshaft spaced 180 degrees apart, rather than placing successive throws at 90 degrees apart from the adjacent forging.
This does seriously modify the firing order of the pistons, and the exhaust note that results.
Designing an engine is a pretty major accomplishment. Designing one that runs smoothly is an even greater accomplishment.
For smooth, about nothing could beat an old straight-eight.